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Health Dictionary

Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.

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Retinoblastoma CT

Introduction

Overview

Overview

CT scan has been the standard imaging study of retinoblastoma. Retinoblastoma usually appears as an intra-ocular mass with calcification (in 80% of the cases).

CT scan

CT scan

Retinoblastoma is diagnosed via indirect ophthalmoscopy. Imaging studies are usually done for these goals:[1]

  • To confirm the diagnosis in the difficult cases.
  • To assess the involvement of extra-ocular extension or associated cerebral lesion in trilateral cases.

Findings on CT scan suggestive of/diagnostic of retinoblastoma include intra-ocular mass with calcification.

However, CT scan has less sensitivity compared to MRI in the diagnosis of tumor infiltration to the nearby structures.[1][2]

Coronal non contrast CT scan showing retinoblastoma[3]
Axial non contrast CT scan showing retinoblastoma[3]
References

References

  1. ↑ 1.0 1.1 Meel R, Radhakrishnan V, Bakhshi S (April 2012). “Current therapy and recent advances in the management of retinoblastoma”. Indian J Med Paediatr Oncol. 33 (2): 80–8. doi:10.4103/0971-5851.99731. PMC 3439795. PMID 22988349.
  2. ↑ Schueler AO, Hosten N, Bechrakis NE, Lemke AJ, Foerster P, Felix R, Foerster MH, Bornfeld N (March 2003). “High resolution magnetic resonance imaging of retinoblastoma”. Br J Ophthalmol. 87 (3): 330–5. doi:10.1136/bjo.87.3.330. PMC 1771559. PMID 12598449.
  3. ↑ 3.0 3.1 Image courtesy of Dr. Dalia Ibrahim. Radiopaedia (original file [1]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]; Associate Editor(s)-in-Chief: Sahar Memar Montazerin, M.D.[3] Simrat Sarai, M.D. [4]